much. we spoke with one of the boston bombing survivors and she has an incredible story with anderson cooper hosting this documentary. watch tonight at 10:00 eastern. it's called "the survivor diaries." that's it for me. thanks for joining me. in the meantime, "the lead" with jake tapper starts right now. does it strike anyone else as a little odd that russia is warning ukraine of a coming civil war when russia is the one amassing at the border? and russian troops poise menacingly at ukraine's border. we'll ask our guest, possible 2016 presidential candidate, marco rubio, will a warship and more threats from the u.s. get ru russia's attention? also, it was the most promising lead but searchers lost the signal that they picked